Electronic Theses and Dissertation

Abstrak uji aktivitas antioksidan daun murraya koenigii terhadap radikal bebas dpph dilakukan dengan metode dpph (1,1-diphenyl-2-pycrilhydrazil). ekstrak etil asetat memiliki aktivitas antioksidan paling kuat dibandingkan dengan ekstrak metanol dan n-heksana secara berturut-turut berdasarkan nilai ic50 yaitu 23; 50,54; dan 64,70 ppm. dari kromatografi kolom (kk) diperoleh 8 (a-h) sub-fraksi. sub-fraksi g menunjukan aktifitas antioksidan yang paling kuat mendekati ic50 vitamin c (3,75 ppm) adalah 14,41 ppm. kata kunci: murraya koenigii, dpph (1,1-diphenyl-2-pycrilhydrazil), antioksidan. abstract antioxidant activity test of murraya koenigii leaves against free radical of dpph by dpph (1,1-diphenyl-2-pycrilhydrazil) method. ethyl acetate extract has the strongest antioxidant activity compared with the methanol and n-hexane extract based on ic50 values of 23; 50,54; and 64,70 ppm, respectively. column chromatography (kk) obtained 8 (a-h) sub-fractions. the sub-fraction g shows the strongest antioxidant activity near to value ic50 vitamin c (3,75 ppm) was 14,41 ppm. keywords: murraya koenigii, dpph (1,1-diphenyl-2-pycrilhydrazil), antioxidant.